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Run results for:
typeof undefined vs undefined equality check
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36
Browser:
Chrome 125
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
equality
3758646.0 Ops/sec
typeof
7264546.5 Ops/sec
Script Preparation code:
window.obj = undefined
Tests:
equality
window.obj === undefined
typeof
typeof window.obj === 'undefined'